Akademik Veri Yönetim Sistemi
Energy and Buildings, cilt.324, 2024 (SCI-Expanded)
The integration of phase change material (PCM) into glazed envelope is an effective measure to enhance its thermal inertia and reduce energy consumption. However, the inefficient utilization of latent heat stored in double-glazed unit filled with PCM (PCMW) in winter and overheating in summer restricts the adoption of PCM in cold regions. Therefore, this work proposed a multifunctional new phase-change louver window integrating PCM and spherical louvers, and numerically investigated its thermal behaviour in summer and winter seasons. The effects of different melting temperatures and ventilation mechanisms on the thermal performance and energy efficiency of phase change louvers were analyzed. The results show that the new phase-change louver window can significantly improve the thermal comfort and energy efficiency of the window. In winter, insulated PCM louver window has the best performance, reducing heating energy consumption by 2618.56kJ/(m2·d) compared to hollow window, with energy saving of 54.03 %, whereas in summer, reflective PCM louver window performed best, reducing cooling energy consumption by 3584.47 kJ/(m2·d) compared to hollow window, with an energy saving rate of 37.08 %. The analysis of various melting temperatures shows that the melting temperature of RT14 is the most suitable in the annual basis, and the introduction of ventilating mechanism for ventilated reflective PCM louvers window can significantly enhance the performance of the window.